Corrugated trimming and process of making same



Aug. 3 ,1929. 1,594,979 A. w. ROCKWOOD CORRUGATED TRIMMING AND PROCESS OF MAKING SAME Filed Dec. 18 1925 7 m m g Patented Aug. 3, 1926.

A. 'WALDO ROCKVJOOD, OF MELROSE, MASSACHUSETTS.

CORRUGATED TRIMMING AND PROCESS (3F MAKING SAME.

Application filed December My present invention is a novel and improved trimming for use on automobiles, shoes, articles of clothing, and the like, and includes the novel process of manufacturing the same.

In many lines of modern manufacturing, such as automobiles, shoes, slippers, pumps, girdles, and other articles, it is desirable tov have a crinkled or corrugated trimming, preferably with a leather facing, for orna mental as well as useful purposes, and one which will have a certain amount of stretch or give to it, without destroying or marring the corrugated surface of the trimming.

It is also desirable to have such a trimming composed of materials which will have great lasting and wearing qualities, and which will not break, tear, or come apart in use, as well as to have the surface of such trimming imperforate, and unmarred by stitching, cutting, stapling, or other fastening devices.

To this end I have devised crinkled or corrugated trimming, ing a facing of leather, body of elastic goring or webbing in a firm and strong manner, by stitching, stapling or the like, and with the fastening devices hidden or concealed beneath; the leather facing, thus forming an invisible bond between the leather facing and elastic webbing.

In carrying out my present invention, I utilize thin strips of leather, such as patent leather, suede or other thin and flexible leather or similar material. These strips of leather are then cut or scarfed, at predetermined spaces, on their underside, this cutting or scai'fing forming a plurality of flaps at predetermined intervals throughout the strip. Any suitable or desirable means my novel comp risor mechanism for so scarfing these leather strips may be utilized, that illustrated herein being for conventional and illustrative purposes only.

The leather strip is then assembled with an underbody of elastic webbing or goring, preferably of equal Width with that of the leather strip, the elastic strip being then stretched to its capacity, or to any desired length, whereupon the leather strip is secured to the elastic webbing, through the flaps producet as above, by means of stitching, staples, or like mechanical fastenin devices, preferably applied transversely or the two strips, and permitting greater freesecured to an under- 4 18, 1925. Serial No. 76,348.

doni of movement and elasticity of the complete]. trimn mg. Upon completion of the attaching operation, and release of the tension upon the strip, the elastic webb ng will then return to its normal consistency, which will of necessity corrugate or crinklethe leather facing thereon, substantially as shown in the drawings herein. It Will be appreciated that by thus applying blind, concealed or hidden fastening means, a bond 'or union between the elastic webbing and leather or other facing is effected, in

the visible on the finished surface or face of said trimming, which is of great importance in articles of this nature.

I believe that my trimming, thus constructed, is new and useful, and I desire to claim the same herein broadly.

I also believe that my process of constructing this trimming is new, and I Wish also to claim this herein.

Further features of the invention, details and advantages will be hereinafter more fully pointed out and claimed.

eferring to the drawings, illustrating a preferred embodiment of my present inven tionz- Fig. l is a view illustrating in conventional detail one method of cutting the flaps on the leather strip;

Fig. 2 is a detail of a portion of such leather strip, illustrating the flaps cut there- 111,

F 3 is a detail of the completed trimming, still in extended or stretched position;

Fig. 4- is a detail of a section of my completed trimming in normal position, greatly enlarged and Fig. 5 is a detail'of asection. of such trimming more nearly life-size.

As shown in the drawings, Fig. l illustrates one means of carrying out my method of scarfing the leather strip 1. In this figme a pair of rollers 2 and 3 are pivotally mounted on a carriage 4, movable back and forth on a table or frame 5. A rotatable circular knife 6 is mounted on a shaft? in juxtaposition with the roll 3. Any suitable operating mechanism for the knife (3 may be utilized; The strip 1 is placed on the belt 8, the carriage being out of position with relation to the knife 6. The knife 6 is adjusted for predetermined depth and angle of cut, and the carriage 4; is moved along the path of movement of the knife, cutting or scarfing a flap, as shown at 9,

Fig. 1. The carriage and strip are then removed from the path of the knife, the eather strip advanced to a predetermined position, and the operation repeated, until the entire strip, or as much of it as desired, has been scarfcd. it will be appreciated that any suitable or desirable cutting mechanism may be utilized for this scarting action or it might feasible to do it by hand, but any means for so cutting will be equally within my invention.

Fig. 2 is a perspective view of a section of the strip 1, with the flap 9 illustrated partly turned back, and

In Fig. 3, l have shown the strip 1 and the elastic webbing or goring 11 in the process of being secured together, the elastic wet hing being under tension to the limit of elasticity of the elastic strip. T he flap 9 is illustrated turned back to permit the line of stitching 12 to be applied transversely of the two strips, whereupon the strip 1 is turned baclr at the next f p on its underside and the stitching or fastening operation repeated. it will be appreciated that any adaptable sewing machine or mechanism may be utilized in thus joining the component parts of my novel -trimming, without any changes being made in such machines. it

will be observed, from an inspection of Fig. 3, that the exposed face of the leather presents an unbroken and imperforate surface, adding greatly to the ornan'iental appearance of'the same. It will also be appreciated that I may utilize staples, or other desired fastening means, instead of the stitching illustrated, to effect the union of the two strips. 1 consider this feature of an invisible fastening medium as an important element of my invention and have therefore claimed the same herein broadly.

In Fig. l is shown a perspective detail of my completed trimming after the tension on the same has been released, and illustrating very graphically the uniform corrugations produced by my novel process of transversely attaching the same.

I have thus produced novel ornamental trimming, capable of wide and extensive use, and one which has the properties of long life, relatively great strength, and of a highly ornamental nature, enhanced by the concealed and invisible transverse fastening means, and one which is water repellant and water proof to a very high degree.

My invention. is further described and defined'in the form of claims as follows 1. As an article of manufacture, a corrugated trimming, comprising a leather strip, flaps formed on the underside thereof, a strip the approximate point ofthe line of stitching or tastening shown at 10.

of elastic material to whichsaid leather strip is united by fastenings through the flaps and the elastic material, such fastening means being invisible on the face of the completed article.

2. As an article of manufac gated trimming, comprising a leather strip, transverse flaps cut on the underside thereof, a strip of elastic material to which saic leather strip is united by fastenings through the transverse flaps and the elastic material, such fastening means being invisible on the face of the completed article.

3. As an article of manufacture, rugated trimming, comprising a leather strip, transverse flaps cut on the underside thereof, a strip of elastic material to which said leather strip is united by stitching through the transverse flaps and the elastic material, such stitching being invisible on the face of the completed article.

at. The improved process of forming corrugated trimming, which consists in utilizing a strip of leather, cutting predetermined spaced transverse flaps on the underside of said strip, assembling the leather strip on a strip of elastic material under tension, uniting the two strips by fastening devices through the flaps and elastic material and invisible on the face of the completed article, and releasing the tension on the elastic material, whereby a trimming having a corrugated leather facing is produced. 7

The improved process of forming corrugated trimming, which consists in utilizing a strip of leather, cutting predetermined spaced transverse flaps on the underside of said strip, assembling the leather strip on a strip of elastic material under tension, uniting the two strips bytransverse fastening devices through the flaps and elastic material and invisible on the face of the completed article, and I releasing the tension on the elastic material, whereby a trimming having a. corrugated leather facing is produced.

6. The improved process of forming corrugated trimming, which consists in utilizing a strip of leather, cutting predetermined spaced transverse flaps on the underside of s id strip, assembling the leather strip on a strip of elastic material under tension, uniting the two strips by transverse stitching through the flaps and elastic material and invisible on the face of the completed article, and releasing the tension on the elastic material, whereby a trimming having an imperforate corrugated leather facing is produced.

In testimony whereof, I have signed my name to this specification.

A. WALDO ROCKWOOD.

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